GATE XE · 2025 · XE-E
Question 105: Second Law of Thermodynamics
Give it a try, then reveal the answer to check your work.
Question 105
XE-ENAT2 marksNeeds review
Air enters a air dryer at 22 °C and 100 kPa with a velocity of 3.7 m/s, and leaves the dryer at 83 °C and 100 kPa with a velocity of 9.1 m/s. The exit area of the dryer is 18.7 cm
, and the ambient temperature is 22 °C. The air is an ideal gas with gas constant
= 0.287 kJ/kg-K and isobaric specific heat
= 1.005 kJ/kg-K. If the change in potential energy is neglected, the second law efficiency (in %) of the dryer is __________ (rounded off to one decimal place).Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerEXPLORE & PRACTISE
Paper and topic context
See where this question comes from and choose what to practise next.
2025XE-E
GATE XE 2025 · Paper 1
Engineering Sciences · Original paper archive
- Section
- Section XE-E
- Question type
- Numerical answer (NAT)
- Marks
- 2 marks
Practise related topics
Explore more previous year questions using this question’s imported topic tags.
engineering sciences
GATE XE previous year questions
engineering
GATE XE previous year questions
applied science
GATE XE previous year questions
second law thermodynamics
GATE XE previous year questions
Second Law of Thermodynamics
GATE XE previous year questions
Comments
Ask a question, share your approach, or help someone understand.
Log in to view the discussion
You’re not logged in. Log in or create an account to see discussions and add comments.